import Vue from 'vue'
import VueRouter from 'vue-router'
import login from '../components/login.vue'
import home from '../components/home.vue'

Vue.use(VueRouter)

const routes = [
  {path:'/',redirect:'/login'},
  {path:'/login',component: login},
  {path:'/home',component:home}
]

const router = new VueRouter({
  mode: 'history',
  base: process.env.BASE_URL,
  routes
})

//挂载路由导航守卫
router.beforeEach((to, from ,next) => {
  //to:将要访问的路径  from:代表从哪个路径跳转而来  next:是一个函数，表示放行  next('/login')强制跳转
  if (to.path === '/login') return next()
  //获取token
  const toKenStr = window.sessionStorage.getItem('token')
  if(!toKenStr ) return next('/login')
  next()
})


export default router
